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Commit 480f3956 authored by Puja Gupta's avatar Puja Gupta
Browse files

soc: qcom: Check err_ready before returning from subsys_generic_handler() 



Allow subsys_generic_handler() to check for err_ready interrupt before
returning, so that subsystem_powerup() can complete successfully during
ssr.

CRs-Fixed: 1094829
Change-Id: I3e91bd2a2189508968f4c5cc62933a13986c6afa
Signed-off-by: default avatarPuja Gupta <pujag@codeaurora.org>
parent a27b2f17

drivers/soc/qcom/subsys-pil-tz.c

+23 −18
Original line number Diff line number Diff line
@@ -911,7 +911,7 @@ static irqreturn_t subsys_stop_ack_intr_handler(int irq, void *dev_id) 
	return IRQ_HANDLED;

}



static void check_pbl_done(struct pil_tz_data *d)

static void clear_pbl_done(struct pil_tz_data *d)

{

	uint32_t err_value;
@@ -938,17 +938,18 @@ static void check_pbl_done(struct pil_tz_data *d) 
	__raw_writel(BIT(d->bits_arr[PBL_DONE]), d->irq_clear);

}



static void check_err_ready(struct pil_tz_data *d)

static void clear_err_ready(struct pil_tz_data *d)

{

	uint32_t err_value;



	err_value =  __raw_readl(d->err_status_spare);

	if (!err_value) {

	pr_debug("Subsystem error services up received from %s!\n",

							d->subsys_desc.name);

	__raw_writel(BIT(d->bits_arr[ERR_READY]), d->irq_clear);

	complete_err_ready(d->subsys);

	} else if (err_value == 0x44554d50) {

}



static void clear_wdog(struct pil_tz_data *d)

{

	/* Check crash status to know if device is restarting*/

	if (!subsys_get_crash_status(d->subsys)) {

		pr_err("wdog bite received from %s!\n", d->subsys_desc.name);

		__raw_writel(BIT(d->bits_arr[ERR_READY]), d->irq_clear);

		subsys_set_crash_status(d->subsys, true);
@@ -960,17 +961,21 @@ static void check_err_ready(struct pil_tz_data *d) 
static irqreturn_t subsys_generic_handler(int irq, void *dev_id)

{

	struct pil_tz_data *d = subsys_to_data(dev_id);

	uint32_t status_val;



	if (subsys_get_crash_status(d->subsys))

		return IRQ_HANDLED;

	uint32_t status_val, err_value;



	err_value =  __raw_readl(d->err_status_spare);

	status_val = __raw_readl(d->irq_status);



	if (status_val & BIT(d->bits_arr[ERR_READY]))

		check_err_ready(d);

	else if (status_val & BIT(d->bits_arr[PBL_DONE]))

		check_pbl_done(d);

	if ((status_val & BIT(d->bits_arr[ERR_READY])) && !err_value)

		clear_err_ready(d);



	if ((status_val & BIT(d->bits_arr[ERR_READY])) &&

					err_value == 0x44554d50)

		clear_wdog(d);



	if (status_val & BIT(d->bits_arr[PBL_DONE]))

		clear_pbl_done(d);



	return IRQ_HANDLED;

}